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Create an image depicting a digital abstract of binary code and Unix command line symbols, including elements like 0s and 1s, and terminal windows.

Binary and Unix Operations Quiz

Test your knowledge on binary representations and Unix commands with this engaging quiz! Whether you're a student, teacher, or simply a tech enthusiast, challenge yourself with ten thought-provoking questions.

Topics include:

Binary number systems
Unix command line operations
File linking in Linux
Fixed-point representation

10 Questions2 MinutesCreated by DecodingData1

Bn-1 * 2n-1 + bn-2 * 2n-2+ ... + b1 * 21 + b0 * 20 defines

Natural binary representation of non-negative integrers

Sign-magnitute representation of integrals

Floating-point representation of real numbers

Two’s complemenent representation

An 8-bit microprocessor subtracted 70H from B0H in two’s complement representation. The result and staes of flags (C-carry, V-overflow) are:

140H, C=0, V=1

40H, C=1, V=0

40H, C=1, V=1

45H, C=1, V=1

The value of -25.375 was encoded in fixed-point representation with a sign bit, 8 bits of an integer part and 7 bits of a fraction. The result is:

C30H

8C30H

CH0H

8CB0H

The value of 25.375 was encoded in fixed-point representation with a sign bit, 7 bits of an integer part and 8 bits of a fracion. The result is:

9906H

9960H

1906H

1960H

A Unix command ls –l /usr/bin 2>> ls.txt means:

List the /usr/bin directory contents, redirecting ls output to the ls.txt file

List the current directory contents, appending ls output to the ls.txt file

List the /usr/bin directory contents, redirecting ls output to the ls.txt file

List the /usr/bin directory contents, appending ls output to the ls.txt file

A Unix command ls –l /usr/bin 1> ls.txt means:

List the /usr/bin directory contents, redirecting ls output to the ls.txt file

List the current directory contents, redirecting ls output to the ls.txt file

List the /usr/bin directory contents, appending ls output to the ls.txt file

List the /usr/bin directory contents, redirecting ls error output to the ls.txt file

Links in Unix/Linux DO NOT have the property:

A hard link may represent a file outside the current filesystem

The main purpose of a hard link is naming the file or directory

When a hard link is deleted, the link is removed but the contents of the file itself continue to exist until all links to the file are deleted

A hard link may represent a directory in the current filesystem, but a user may not create it directly

Links in Unix/Linux have the property:

A hard link is a special file containing the relative path to a target file

A hard link may represent a file outside the current filesystem

When a hard link is deleted, the link is removed but the contents of the file itself continue to exist until all links to the file are deleted

A user may create a hard link to represent a directory in the current filesystem

The command: lm@arch: ~% ls /usr/bin/ | grep ‘[^e-g]grep$’

Will match the filenames in /usr/bin that end with one of the characters ‘’’, ‘e’, ‘f’, ‘g’ followed by word grep

Will match the filenames in /usr/bin that end with a character other than ‘e’, ‘f’, ‘g’ followed by word grep

Will match the filenames in /usr/bin that end with one of the characters ‘’’, ‘e’, ‘,’, ‘g’ followed by word grep

Will match the filenames in /usr/bin that contain the string [^e-g]grep$

The command: lm@arch: ~% ls /usr/bin/ | grep ‘^[cg]++’

Will match the filenames in /usr/bin that end with either c++ or g++

Will match the filenames in /usr/bin that start with either c++ or g++

Will match the filenames in /usr/bin that contain ^[cg]++$

Will match in /usr/bin the filenames c++ and g++

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Binary and Unix Operations Quiz

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